28" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 10 5/8"] RV Mobile Home + Product Details Size –

+ Product Details Size – 12"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 12 5/8" height -

actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height -

actual front end outer dimensions are approximately 18 5/8" width X 34 5/8" height

28" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 10 5/8"] RV Mobile Home + Product Details Size –+ Product Details Size 28"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 10 5 8" height Actual Filter Size 27 3 4"w x 7 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall & ceiling Design Removable frame for easy filter change & cleaning uses a 1" thick filter. Our filter